Global glaciations took place in the earth in Neoproterozoic, which are called the "Snowball earth" event by some scholars.
在新元古代晚期地球上曾发生过全球性的冰川作用，一些学者称之为“雪球”事件。
Global glaciations took place in the earth in Neoproterozoic, which are called the "Snowball earth" event by some scholars.
在新元古代晚期地球上曾发生过全球性的冰川作用，一些学者称之为“雪球”事件。
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